APA (7th ed.) Citation

Wienert, K. A. (1970). Notes on geomagnetic observatory and survey practice. Unesco.

Chicago Style (17th ed.) Citation

Wienert, K. A. Notes on Geomagnetic Observatory and Survey Practice. [Paris]: Unesco, 1970.

MLA (9th ed.) Citation

Wienert, K. A. Notes on Geomagnetic Observatory and Survey Practice. Unesco, 1970.

Warning: These citations may not always be 100% accurate.